Open Colorimeter Plus

The Open Colorimeter Plus is the latest version of the Open Colorimeter variants specifically for fluorescence measurements. The Open Colorimeter Plus measures light from a sample under excitation by UV, visible or IR light. This is a portable, stand-alone instrument.

The Open Colorimeter Plus uses a TSL2591 light sensor (the same light sensor used in the standard Open Colorimeter) placed at a right-angle (90°) to the excitation LED. A PyBadge is pre-programmed with open source CircuitPython firmware. Light detected by the 90° measurement sensor is viewed as counts, irradiance (µW/cm²) or relative (normalized) fluorescence units. A second TSL2591 light sensor at 180° can be used to calibrate/normalize measurements to the excitation LED intensity.

The Open Colorimeter Plus design works with standard 0.2 mL PCR-type tubes though a cuvette-version is also available. The Open Colorimeter Plus enclosure is made from 3D-printed black resin. An electronics cover is 3D-printed from black PFA filament. This cover is easily removable so you can easily change out the excitation LED and/or insert emission filters.

More details including links to the hardware designs and open source firmware are included in the online Product Guide.

Product Features

• The Open Colorimeter Plus ships pre-programmed & ready-to-use. No assembly, soldering or programming is required
• Includes a USB cable for battery-charging or power
• Includes a light-blocking cap to place over the tube during measurements
  
• Includes set of 6 x 0.2 mL PCR/microfuge tubes
• Minimum sample fill volume: 50 µL

Customize the excitation LEDs & emission filters (not included)

The Open Colorimeter Plus works with any of our UV, Visible or IR single-wavelength LED boards. Select the appropriate excitation LED for your fluorophore/sample. If your preferred wavelength is not listed, please contact us.

Emission filters are not included. Check out the Product Guide for some suggested filters.

Documentation: Open Colorimeter Product Guide